Question

What mass of a 4.00 % NaOH solution by mass contains 15.0 g of NaOH?

Answer 1

Answer:

375 g

Explanation:

Let the total mass of the solution = x g

Given that the mass of NaOH in the solution = 15.0 g

Thus, mass of the solvent = x - 15.0 g

Given that the mass % of the solution = 4 %

So,

$Mass\ percent=\frac {Mass\ of\ the\ solute}{Mass\ of\ the\ solution}\times 100$

So,

$4=\frac {15.0}{Mass\ of\ the\ solution}\times 100$

Mass of the solution = 375 g